Improvement in watch-keys



and prevents the swivel from dropping" out.

'The arrangement of the parts, also, is such, as will be seen by reference to the drawing, that the pin D can at gems fairs gsttrnt ffirn.

GEORGE B. ST, JOHN, OF BOSTON, MASSACHUSETTS, ASSIGNOR T0 HIMSELF AND NORMAN s. GATE, OF SAME PLACE.-

Letters Patent-No. 75,214,-dated March 3, 1868..

IMPROVEMENT IN WATCH-KEYS.

filte'firlgrimlt rztrmt this 111252 3221M want mm mating part at it: smut.

TO ALL TO WHOM THESE PRESENTS SHALL COME: v

Be it known that I, Geo-Ron 13. ST. JOHN, of Boston, in the county of Suffolk, and State of Messz'mhusetts, have invented a new and improved WatohKey and do hereby declare the following to be a full, clear, and exact description'thereofg due reference being had to the accompanying drawings, making part of this specification, and in whichl Fignre l is a. side view of the watch-key complete.

Figure 2 is a. longitudinal section, showing the arrangement of the swivel, springyand pin.

The object of this invention is to produce a. simple, cheap, and efi'ective arrangement to eject dirt, which oftenfills the socket and prevents the use of the key till such dirtshull be removed. I

Ihis ihvention consists in the employment of a..swivel, in connection with a key-head, spring, and pin, con- Itru'cted end operating substantially as hereinafter explained.

In the'above-mentioned drawings, illustra ting my invention, Adenotes the key-head, B the elongnted swivel, C the spring, and D the pin, which allows the swivel to slide Back and forth the length of-the necking,

The operation of the ahovesdescribed device, on account of its e treme simplicity, will be very readily understood. v

Whenever dirt may have collected within the socket-tube it is only necessary to press the swivel, and that part of -the swivel-which extends to the socket forces out the dirt-,the spring immediately returning the swivel to its proper position. It will be seen that-a. plunger, so made as to close the mouth of. the socket and prevent dirt from entering, must be very nicely fitted, and at the same time have the form of the socket, thus necessitating the employmentpf another piece to form zit-swivel. In this invention the elongation of the swivel is made round, and-it need not he so nicely fitted to forcothe dirt out as would be necessary to keep it from entering any time be-reinoved, and the plunger B end springC readily drawn ont'frorn the key-head; whenever it becomes necessary to repair the key or to clean out the'chamber in which the springis located; It is by means of this 'pin that not only the movement of the plunger is limited, but all the parts of the key are held together-in their proper relati ons'to one another. Thekey my be made ornamental, end attached to the watch-chnin by the ring in the swivel. p

I I claim the combination and arrangement of the elongated swivel or'plunger and its surrounding spring with the key-head ondthe pin D, substantially ill the manner and for the purposes herein shown and described.

' GEORGE B. ST. JOHN.

Witnesses:

, EDMUND H. HEWINS,

E. Gnrrrrrm; 

